Product Description:

The RD52.2-4B-005-L-NN-FW drive controller is manufactured by Bosch Rexroth Indramat and belongs to the RD 500 Drive Controllers series. In industrial automation, this product converts fixed mains power into precisely timed output that lets three-phase induction or synchronous machines follow velocity and positioning profiles dictated by a PLC or motion card. By combining power electronics and digital regulation, it forms the core actuator interface in conveyors, packaging cells, and machining centers.

Its control core employs field-oriented vector control, so stator currents are separated into torque-producing and flux-producing components, giving tight speed accuracy even at low frequency. This helps the drive maintain steady torque when process speed must remain consistent through load changes. The power section accepts a 380 to 480 V three-phase supply and contains an integrated mains filter that attenuates conducted emissions at the cabinet entry. Thermal losses are removed by forced air cooling, allowing continuous operation at rated current when ambient ventilation is adequate. A built-in brake chopper diverts regenerated DC-link energy to an external resistor during rapid stops or overhauling loads, which helps protect the intermediate circuit from overvoltage. No supplemental application functions are installed, so the unit remains focused on standard drive tasks.

The power module is sized for 5.5 kW motor output and uses a Converter 3 × AC topology that rectifies the incoming line before PWM inversion. Generation 2 includes updated IGBT switching and diagnostic interfaces while retaining the same mechanical dimensions for existing cabinet layouts. The input stage tolerates line fluctuations within ±10 %, reducing nuisance trips in facilities with variable grid stability. This arrangement supports stable operation in plants where supply conditions vary during normal equipment loading.